Home / 150,909.11-208,242.36-87,251.01

Finding the Fourth Proportional to 150,909.11, 208,242.36 and 87,251.01

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Solution

The fourth proportional to 150,909.11, 208,242.36 and 87,251.01 is: 120,399.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,909.11 : 208,242.36 = 87,251.01 : x
  2. Step 2: Convert to fraction form
    150,909.11/208,242.36 = 87,251.01/x
  3. Step 3: Cross multiply
    150,909.11x = 208,242.36 × 87,251.01
  4. Step 4: Simplify right side
    150,909.11x = 18,169,356,234.78
  5. Step 5: Solve for x
    x = 18,169,356,234.78/150,909.11
  6. Step 6: Final answer
    x = 120,399.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.